Milking apparatus.



O. G. RIESKB.

MILKING APPARATUS,

APPLICATION FILED 0c1'.2a,1912

1,106,846. Patented Aug.11,191 l:.

4 SHEB'I'S SHBE'I' 1.

WEI .3515 51 1'6] may ($61M an? O' G, RIBSKE. MILKING APPARATUS.

APPLICATION FILED 0 .25, 1912.

Patented. Aug. IL?

was 55M Q. G. RIESKE. MILKING APPARATUS. APPLICATION IILED 00T.26, 1912.

Patented. Aug. 11, 1914.

4 SHEETS-SHEET 4.

' www W 5 6g] hi s Afiorwyfl after described and delined in the claims.

OTTO G. RIESKE, 0F BEAVER DAM, WISCONSIN, ASSIGNOR raser HOFNER, OF INDIANAPOLIS, INDIANA.

MILKING nrr enaros.

Licence.

To all whom it may concern Be it known that l, O'r'ro G. RIIGSKE, a citizen of the United States, residing at Beaver Dam, in the county oi Dodge and State of Vi isccnsin, have invented certain new and useful Improvements in Milking Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it up pertains to make and use the same.

My invention has for its object to provide an improved mill ring apparatus, and to such ends, the invention consists of the novel devices and combinations of devices herein- In' the present invention, as a feature whichI-believe to be broadly new in milking apparatus, I utilize a liquid, such as water, instead of an elastic fluid, such as air, as the medium for transmitting the pressure impulses to cups. O'thcrwisestated, this improved nrilking apparatus is operated on-the hydraulic principle instead of on the usual pneumatic plan. By this improved method or process, the impulses are made more positive and the resulting action is more certain The invention also provides a teat cup which is novel, per se, and which is capable of being used either with anon-elastic liquid, the actuating means, or with an elastic fluid, such as air.

' The invention further includes a novel arrangement of a cylinder and codperating piston for producing the impulses, and in which the piston has a yielding action, whenever a predetermined pressure on the liquid is exceeded.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a diagrammatic View showing the complete a iaratus- Fi 2 is a lan View with some ing a valve-equipped tube parts SiQCtlUIlBtl, showing a group of four connected teat cups; Fig. 3 is a side ele *ation oi. the parts shown in Fig. 2; Fig. i is a plan view with some parts sectioned, showconstituting a part of the connection bctween'the pnlsator and the teat cups; Figs. 5, 6, 7 and S are sectional views through one of the teat cups, illustrating the several different actions Specification of Letters Patent.

the ex'pansible elements of the teat tion of the said tube.

or the improved teat cup.

Each teat cup has a thin metal casing or" :shell 1 and a very flexible rubber inner tube 2.

internal, ,nels 3, 4 and 5. Between the channels 3 and 54, said shell 1 is provided with a radially projecting nipple 4 and 5, with a similar nipple 7. The ruhber tube 2, at its upper end, is tightlyseate'd with an air tight joint,

within the uppe channel 3, y

a stiff retaining ring 8, and, at its lower end, it is, by asimilar ring 9, like wise seated in the lower channel 5. A Short vdistance below its upper end, the said rub 'ber tube 2 is also seated, with an air tight joint, in the intermediate channel l, by a third retaining ring 10. In this way, the rubber tube 2 is divided into independently acting upper and lower portions 2 and 2", respectively, and the space between the said two tubes and the shell 1, is divided into upper and lower chambers 1 and 1}, respectively, that are in communication, respectively, with the nipples 6 and 7. Those portions of therubbcr tube 2 that are engaged by the retaining rings 8, 9 and 10, are of greater thickness than the main body por- Preferably, the walls of the said tube 2 decrease in thickness in a direction from the lower ring 9 toward the intermediate ring 10, and again decrease in thickness in a direction from the intermediate ring 10 toward the upper ring 8. This is done for purpose. f

The four teat cups are assembled around the delivery end of a short coupling tube 11 which is provided with four radially pro jccting nipples Each'nipple 12 iscon nected by a short rubber tube 13 to the upper nipple 6 of one of the teat cups.

The numeral 14, indicates a lower coupling tube which, like the tube 11, has four radially projecting nipples 15 connected by short rubber tubes 16 to the lower nipples 7 of the respectiv teat cups.

The upper coupling tube 11. is connected by a rubber tube 17 to one branch 18 of a so-called pulsation distributer, indicated as To ALBERT J. aversion Patented Aug. iii, 1914i. Application filed @ctober26,.1912. Serial H0. 727,922.

Attention is first called to the constructionl The shell 1 is formed with three outwardly pressed, annular chan- 6 and between the channels an entirety by the numeral 19. The coupling tube 14, in a similar manner, is con nected by a rubber tube 20 to another tube 21 of the so-called pulsation distributer. The tube 21 is bifurcated or divided and, in one branch, has a spring closed check valve 22 and, in its other branch, a spring closed check valve 23. The check valve 22 permits a flow of water or other medium into and through the tube 20, but checks a reverse flow. The check valve 23 operates just reverse manner. The said check; valve 2 we will assume, requires a pressure of three pounds per square inch to open it, but the check valve 22 is set to open under slightestipressure which will serve to nor mally hold it closed. The said pulsation distributer has a nipple or tube 24 connected, by a long rubber tube or hose 25, to a nip l 26, that opens into the lower end of a y inder 27. This cylinder 27, as shown, is connected at its lower end, by a pivot 28, to a base 29 having an upwardly projecting pedestal 30.

\Vorking within the cylinder 27 is a piston 31. The piston is provided with a long stem 32 that Works diametrically through a wrist pin 33 journaled to a crank arm, 34 carried by a short shaft 35 journaled in a bearing 36 on the upper end of the pedestel 30.

The numeral 37 indicates whatmay be assumed to be either a pulley or a, fly" wheel and whichpiay be driven by a belt or which may be driven b hand power applied to a crank 38. carried by the said wheel 3?.

The numeral 39 indicates a washer whirh is adjustably held against a nut ll) on he intermediate portion of the piston rod 3. rolled spring 4i surrounds the rod a is compresstul between the washer Ill) and piston 31. ()Ffviously, the tension of the spring 4-1 may be varied by ad just-merits oi the nut 40.

The numeral 42 indicates a sleeve whirh surrounds the upper portion of the piston rod bears against the .washer 39, and is commuted on the wrist pin 33.

Operation: The operation of the improved milking apparatus, above 6 ibed, is substnntially as follows: When the piston-ll thepulsator is given a suction or up' stroke, a back pressure will be {)IOilllfl in the teat cups and both the upper and lower portions of the flexible tube will be 87}')7iil(l oil or drawn against the rising "i, so that the several teat cups may be easily applied to the rows teats, which latter are indicated in the drawings by the character Z (see Fig. 6), Fig. 5 shows approximately the nor" mal shape of the flexible tube 2 after it has been appliedin the casing but when not subjcet to pressure in either direction. iii/ion it is applied, the said flexible tube nuty ha e an approximately cylindrical shape Qbvfilll cone

ously, the flexible tubes 13 movements of the several teatcups, so that they may be easily adjusted 'to the cow! teats. The pressure pulsations are produced pressure produced by the working stroke of the piston 31 will immediately produce a pressure in the upper chambers 1 of the teat cups, and the important effect of this is that the upper portion 2" of the flexible tube teat, thereby choking; the same, as shown m Fig. i", so that the milk contained in the teat cannot flow backward or upward into the udder. Instantly followin'g-this choking of the teat, the increasing pressure will open the valve 22 and thereby admit liquid into the lower chamber 1", so thatthe lower main section 2" of theflexible tube willbo contracted against the me in body of the teat thereby causing the milk to be ejected from the teat. Owing tothe varying thickness of the walls of the flexible tube 2, premure ap-' plied in the chambers 1" and 1 will first contract the most sensitive portions of said tube, which. as shown, is the uppermost in each of said sections, and then graduallywork down ":nd on the same. l mmediately upon the suetion or upward movement of the piston 3'1 of the pulsator, the water, or other liquid or medium contained in the tubes of {he milking system, will be drawn backward and both sections 2 and 2 will be ceusedto expand radially outward against or toward the surrounding easing 1, so as to thereby give the milk a chance to again fill the oxpended teat. of course, be repeated over and over, with a properly timed. action. All of the several teat cups are simultaneously applied, and the d ibution of thepressure against the 'o sections or portions oil-the flexible tube, eontrolled by the single valve mechanism show. in Fig. 4. In fact, any desired number c i the said single valve mechanism.

The milking action above described, very 1v imitates the action produced on the iillring by hand. The milking action duoentirely to premure uppliedin the primer manner tothe teat, and suction is not relied upon orrd tilized as a means for drawlug or puilingthemilk from the tents. Hence,

permit relative by a downward or working stroke of the pisbeen exceeded. Hence, it results that the,

and squeeze the same, as shown in Fig. 8,

These pressure pulsations will,.

sets of test cups may be controlled by will be contracted against the baseof the nipple at different times, the contractionrof incense v v I a continuation of the milking action bnthe teat or on the teats after the cow has been milked dry, will do no harm, and cannot cause bleeding of the teats, as is 'donein ap' paratus wherein suction is relied upon to draw the milk from the teats.

The greater the number of cups in action, the greater will be the operative movement of the piston 31 of the pulsstor required to produce the properpulsations.- i Hence, the

arrangement should be such thatthe extreme movements of the said piston fiwill be sufficient for the maximum number of teat cups employed. When a less number of teat cups are in action, the piston will move untilit will produce the proper 2 pressure, determined by the tension of the spring 41, and then the said spring will yield and permit the crank arm 34 to continue its rotations Without imparting full movements to the Said piston. What I claim is: g f 1. Ina milking apparatus, the combination With a teat cu 'having elastic upper and lower sections, f a pulsator, independent connections between said pulsator and the two elastic elements of said teat cup, and reversely acting yieldingly z wted check valves in branches-of the connection to one oi said elastic sections, operative to cause contractions of the elastic sections upon the nipple, at different times.

In a milking apparatus, the combination with a teat cup having elastic upper and lower sections, of a pulsator, independent connections between said pulsator and the two elastic elements of said teat cup and freversely acting yieldingly seated check valves in branches of the connection to one of said elastic sections, operative to cause contractions of the elastic sections upon the the upper elastic section being in advance 3. In a milking apparatus, the conibination with a plurality of teat cups having elastic inner members, of a pulsator comprising a cylinder and a piston, conduits connecting said cylinder and the several teat cups, andr heans-rfor reciprocating one of the elements yet said pulsator, said means includingoa yielding element arranged to produce a predetermined maximum compression regardless of the number of teat cups hich may be in action.

4. A teat cup comprising a rigid metallic outer casing having internal channels at its ends and intermediate portion, and a rubber tube within said casing,

pressing the upper end and intermediate portion 0t said rubber tube into theinternal channels of said casing, thereby forming up per and lower chambers between said casing and rubber tube, and tlie said casing having ports opening into the ssidnpper and lower er-s A that cup comprising an outer casing and an elastic inner tube, the said elastic in nor tube having air tightbonnections to the upper and lower-ends and intermediate ortion of said casing, and the said casing hav ing ports opening into the upper and lower chambers thus formed between said casing and said tube, the rubber tube having walls that decrease in thickness from its lower end toward its intermediate portion, and which also decrease in thickness in a direction from its intermediate toward its upper end portion, substantially as described.

In testimony whereof I afiix my signature in presence of two, witnesses.

' OTTO Gr. RIESKE. Witnesses:

- HARRY D. KILGORE,

F. D, MERCHANT.

and retaining rings- 

